COMMUNICATION METHOD AND APPARATUS

The present invention provides a data transmission method, and an apparatus for implementing the method. In current practice, when applications running on virtual devices on hosts communicate through remote direct memory access, virtualization and data forwarding need to be performed for a plurality of times. As a result, steps required for performing data transmission are increased, and high network overheads and a long delay are caused. For a problem of low efficiency caused in the current practice, in the present invention, an application on a virtual device applies for shared memory, and uses the shared memory to transmit data with another application. In this way, steps required for performing data transmission between applications on virtual devices are reduced, network overheads are reduced, a delay is shortened, and system efficiency is improved.